What is UL 60335-2-147 ?

Title: Understanding UL 60335-2-147: The Safety Standard for Portable Transformers and Similar Products

Portable transformers and power supplies are essential products that power many everyday devices. However, they pose a significant safety hazard if not handled properly. The Underwriters Laboratories (UL) has defined a safety standard for these products with its UL 60335-2-147 standard. This standard aims to ensure the safety of consumers when using portable transformers, power supplies, battery chargers, and similar products designed for household use. In this article, we will discuss the purpose of UL 60335-2-147, its key requirements, and how manufacturers must comply with these guidelines to ensure the safety of their products.

Purpose of UL 60335-2-147:

UL 60335-2-147 is a safety standard developed by UL specifically for portable transformers and similar products designed for household use. The main purpose of this standard is to ensure the safety of consumers when using these products. It sets forth specific guidelines for manufacturers to follow in order to prevent potential hazards such as electric shock, fire, or mechanical injuries.

Key Requirements of UL 60335-2-147:

To comply with UL 60335-2-147, manufacturers must design and produce their products in a way that minimizes risks associated with electrical components, wiring, insulation, temperature rise, and other potential dangers. Some of the key requirements of UL 60335-2-147 include:

Electrical Components:

Manufacturers must ensure that their portable transformers and power supplies have adequate electrical insulation to prevent electrical hazards. This includes ensuring that all electrical components are appropriately labeled and have a suitable voltage rating.

Wiring:

Wiring must be properly insulated and have appropriate labeling to prevent fires and other hazards. Manufacturers must also ensure that their products are designed to prevent voltage surges and other electrical hazards.

Insulation:

Insulation must be appropriate for the intended use of the portable transformer or power supply. Manufacturers must ensure that all insulation materials are fire-resistant and have an appropriate melting temperature.

Temperature Rise:

Temperature rise must be minimized to prevent damage to the portable transformer or power supply. Manufacturers must ensure that their products have appropriate thermal management to prevent overheating.

Conclusion:

UL 60335-2-147 is an essential safety standard for portable transformers and similar products designed for household use. Compliance with this standard is mandatory for manufacturers to ensure the safety of their products. By following the guidelines set forth in UL 60335-2-147, manufacturers can minimize the risks associated with their products and provide a safe and reliable product for their customers.